2009 Audi A8 vs. 2007 Fiat Siena
To start off, 2009 Audi A8 is newer by 2 year(s). Which means there will be less support and parts availability for 2007 Fiat Siena. In addition, the cost of maintenance, including insurance, on 2007 Fiat Siena would be higher. At 2,975 cc (6 cylinders), 2009 Audi A8 is equipped with a bigger engine. In terms of performance, 2009 Audi A8 (217 HP @ 6300 RPM) has 149 more horse power than 2007 Fiat Siena. (68 HP @ 4600 RPM). In normal driving conditions, 2009 Audi A8 should accelerate faster than 2007 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 2009 Audi A8 weights approximately 580 kg more than 2007 Fiat Siena. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2009 Audi A8 (300 Nm @ 8200 RPM) has 165 more torque (in Nm) than 2007 Fiat Siena. (135 Nm @ 2500 RPM). This means 2009 Audi A8 will have an easier job in driving up hills or pulling heavy equipment than 2007 Fiat Siena.
Compare all specifications:
| 2009 Audi A8 | 2007 Fiat Siena | |
| Make | Audi | Fiat |
| Model | A8 | Siena |
| Year Released | 2009 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2975 cc | 1697 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 2 valves |
| Horse Power | 217 HP | 68 HP |
| Engine RPM | 6300 RPM | 4600 RPM |
| Torque | 300 Nm | 135 Nm |
| Torque RPM | 8200 RPM | 2500 RPM |
| Engine Compression Ratio | 11.0:1 | 20.3:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Top Speed | 242 km/hour | 160 km/hour |
| Acceleration 0-100mph | 8.3 seconds | 16.3 seconds |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1670 kg | 1090 kg |
| Vehicle Length | 5190 mm | 4140 mm |
| Vehicle Width | 1900 mm | 1640 mm |
| Vehicle Height | 1460 mm | 1440 mm |
| Wheelbase Size | 3080 mm | 2380 mm |
| Fuel Consumption Overall | 9.6 L/100km | 6.9 L/100km |
| Fuel Tank Capacity | 90 L | 47 L |
